Use a properly sized sauce pan half full of well salted water.

Peel and quarter the potatoes and put them into the sauce pan.

When all of the potatoes are cut up, put the sauce pan over high heat on the stove top and bring to a boil.

Once boiling, reduce to medium heat and simmer until all of the potatoes are tender.

When done, drain the potatoes and put then put them back into the sauce pan.

Add the butter, sour cream, garlic powder and a splash of milk (a couple of tablespoons).

Mash the potatoes with a potato masher, or for extra smooth mashed potatoes you can use an electric hand mixer.

Add some additional milk as needed to get the desired consistency.